Effects of Metallic Sheath Width on Weld Metal Microstructure by Applying Titanium Chips as Flux Compounds of Tubular Wire Aiming to React TiC

Abstract

Titanium chips were used with flux components in tubular wires made from the conformation and drawing of metallic strips with different thicknesses. The wires showed internal diameters of different dimensions, affecting fluxes rates filling efficiency. For the same welding conditions, the wires made with the thicker tapes promoted higher short circuit rates in the metallic transfer, while in the thin tapes there was a mixed transfer with short circuit and globular. Stability of welding process was more notable by tubular wire made of the thicker tapes. The variation in the supply of titanium from the flow affected the morphology and size of the carbide particles considerably. The microhardness values presented a direct relation with the titanium supply in the flux.

Key-words:
Microhardness; Carbide morphology; Recycling; TiC